package io;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

public class FISDemo {
    public static void main(String[] args) throws IOException {
        FileInputStream fis = new FileInputStream("fos.dat");
        int a=fis.read();
        int b=fis.read();
        System.out.println(a+","+b);
        System.out.println(fis.read());

    }
}
